| Validity of acoustic quantification colour kinesis for detection of left ventricular regional wall motion abnormalities: a transoesophageal echocardiographic study. | |
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MedLine Citation:
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PMID: 9389268 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Transoesophageal echocardiography is a sensitive monitor for intraoperative myocardial ischaemia. Colour kinesis is a new technology for echocardiographic assessment of regional wall motion based on acoustic quantification. We have examined the feasibility and accuracy of quantitative segmental analysis of colour kinesis images to provide objective evaluation of systolic regional wall motion during the perioperative period using transoesophageal echocardiography (TOE). Two-dimensional echocardiograms were obtained in the transgastric short-axis and long-axis views in 60 patients with coronary artery disease undergoing noncardiac surgery. End-systolic colour overlays superimposed on the grey scale images were obtained with colour kinesis to colour encode left ventricular endocardial motion throughout systole. These colour-encoded images were divided into segments and compared with corresponding conventional two-dimensional images. Six hundred of a potential 720 left ventricular wall segments were of sufficient resolution for grading by experts; they diagnosed wall motion abnormalities in 61 of these segments by a conventional method. In comparing the conventional TOE method with colour kinesis, there were 60 true positives, 482 true negatives, 57 false positives and 1 false negative result. This yielded a sensitivity of 98%, specificity of 89%, positive predictive value of 51% and negative predictive value of 100%. Translational and rotational movement of the heart and papillary muscle interference were common problems accounting for false positive diagnoses. We conclude that colour kinesis provides a basis for objective and on-line evaluation of left ventricular regional wall motion which is a sensitive but non-specific method. It may be a useful aid for the less experienced because it can potentially direct the anaesthetist's attention towards specific segments. |
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Authors:
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T Hartmann; N Kolev; A Blaicher; C Spiss; M Zimpfer |
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Publication Detail:
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Type: Clinical Trial; Comparative Study; Controlled Clinical Trial; Journal Article |
Journal Detail:
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Title: British journal of anaesthesia Volume: 79 ISSN: 0007-0912 ISO Abbreviation: Br J Anaesth Publication Date: 1997 Oct |
Date Detail:
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Created Date: 1997-12-17 Completed Date: 1997-12-17 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0372541 Medline TA: Br J Anaesth Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 482-7 Citation Subset: IM |
Affiliation:
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Department of Anaesthesiology and General Intensive Care, University Hospital of Vienna, Austria. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Echocardiography, Doppler, Color / methods* Echocardiography, Transesophageal / methods* Feasibility Studies Female Humans Image Processing, Computer-Assisted / methods* Male Middle Aged Monitoring, Intraoperative / methods* Myocardial Ischemia / ultrasonography Predictive Value of Tests Prospective Studies Sensitivity and Specificity Ventricular Dysfunction, Left / ultrasonography* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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